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Standard spiral drills can be used with the quick-release chuck. (see fig.3.5).
Drilling in explosive surrounding
Fig. 3.6: The drill must be water cooled to avoid sparks.
Water connection at the ball valve.
Placing the machine into the carrying case
Make sure the adjusting sleeve is locked at the setting "rotary hammer drilling".
Side handle
this can be turned through 360° and locked in any d esired position.
Depth gauge
Press unlock button, adjust depth gauge and release button.
Cold weather operation
If the rotary hammer drill has to be used during cold weather, pre-heat the hydraulic fluid at
low motor speed.
If the normally recommended fluids are used, the fluid temperature should be 10 °C (82
centistokes) or more, before operating the machine. Too high viscosity damages the hydraulic
motor (the hydraulic system).
Before underwater operation
Ensure that:
- All hydraulic hoses are properly connected.
- The machine is tested for leakage and for the functioning of all parts.
Notice: Keep in mind that 10 meter water depth corresponds to 1 bar.
When working in greater depths match the diameter of the supply and exhaust hose
appropriately.
After underwater operation
- Clean and dry the machine with compressed air.
- Spray all moving parts with multi-oil-spray.
44
Fig. 3.5
UNDERWATER USE
Fig. 3.6
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